Headlight

Abstract

The utility model discloses a headlight, belongs to the technical field of headlights, and aims to overcome the defect that the light loss of the conventional headlight is large. The front lamp comprises a shell, a heat dissipation base is arranged on the shell, a driving plate is arranged on the heat dissipation base, a low-beam light source is arranged on the driving plate, a first low-beam lens is arranged in front of the low-beam light source, and a second low-beam lens is arranged between the low-beam light source and the first low-beam lens. The second low-beam lens closer to the low-beam light source is used for primarily condensing light rays emitted by the low-beam light source, so that more light rays are condensed to the first low-beam lens, the light rays of the low-beam light source are more sufficiently emitted through the first low-beam lens, the utilization rate of the light rays is increased, light loss is reduced, and the light utilization rate is increased under the condition of the same brightness. And the manufacturing and using cost of the lamp can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle lamps and relates to a headlamp. Background Art

[0002] At present, most of the lights of some bicycles, scooters and electric vehicles on the market have single functions. Usually, the position lights, high beam lights and low beam lights are separated. For example, bicycles, scooters and electric vehicles need low beam lights, high beam lights and position lights, which require additional light accessories and are installed separately, which is easy to cause inconvenience in installation and high cost. Chinese patent documents disclose a position light and low beam light integrated headlight, which integrates the position light, low beam lights and high beam lights. Lenses are set corresponding to the low beam lights. Since the low beam lights and high beam lights are emitted in a diffused shape, a large amount of light cannot pass through the lens for lighting, resulting in large light loss. The same brightness lighting requirements require the use of brighter lamps, which increases the cost of lamps and electricity. Summary of the invention

[0003] The utility model proposes a headlight in view of the problems existing in the prior art, aiming to overcome the defect of large light loss of the existing front vehicle light.

[0004] The utility model is achieved in this way:

[0005] The headlight is characterized in that it includes a shell, a heat sink is provided on the shell, a driving plate is provided on the heat sink, a low beam light source is provided on the driving plate, a first low beam lens is provided in front of the low beam light source, and a second low beam lens is provided between the low beam light source and the first low beam lens.

[0006] The light emitting surface of the second low beam lens is smaller than the light emitting surface of the first low beam lens, and the distance between the light incident surface of the first low beam lens and the light emitting surface of the second low beam lens is greater than the distance between the light incident surface of the second low beam lens and the low beam light source.

[0007] The second low beam lens has a positioning column, the driving plate is provided with a positioning hole, the positioning column is embedded in the positioning hole, the housing has a positioning portion, and the positioning portion abuts against the second low beam lens to press the second low beam lens onto the driving plate.

[0008] The housing comprises a rear shell and a decorative shell. After the rear shell and the decorative shell are fixed, the first low beam lens is supported and fixed. The decorative shell has a low beam hole, and the first low beam lens passes through the low beam hole.

[0009] The driving plate is provided with a high-beam light source on both sides of the low-beam light source, the shell is provided with a high-beam lens corresponding to the high-beam light source, and the shell has a light isolation wall to isolate the channel from the low-beam light source to the first low-beam lens and the channel from the high-beam light source to the high-beam lens from each other.

[0010] A position lamp is arranged between the rear shell and the decorative shell, a light homogenizer is arranged in front of the position lamp, a lampshade is arranged on the shell to cover the light homogenizer and the first low beam lens, the lampshade is a transparent cover, a light emitting cavity is arranged on the lampshade, the light homogenizer is embedded in the light emitting cavity, and the light emitting cavity has an outer light emitting surface and an inner light emitting surface. The high beam light source, the low beam light source and the position lamp all adopt LED lamps.

[0011] The shell includes a mounting portion and an annular portion, both ends of the mounting portion are integrally connected to the annular portion, the heat sink is fixed corresponding to the mounting portion, a first vent is provided between the mounting portion and the annular portion, and a second vent corresponding to the first vent is provided on the lampshade.

[0012] A sealing ring is arranged between the heat sink and the shell, the heat sink has an installation cavity, the drive plate is fixed in the installation cavity, the rear end of the heat sink is provided with an air hole connected to the installation cavity, and the air hole is provided with a waterproof breathable membrane.

[0013] The first fixing positions are arranged at two sides of the heat sink and / or the second fixing position is arranged at the middle of the heat sink.

[0014] The headlamp provided by the utility model preliminarily focuses the light emitted by the low-beam light source through the second low-beam lens which is closer to the low-beam light source, so that more light is gathered to the first low-beam lens, and the light of the low-beam light source is more fully emitted through the first low-beam lens, thereby improving the utilization rate of light and reducing light loss. Under the condition of the same brightness, the manufacturing and use costs of the lamp can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a cross-sectional structure of a headlight;

[0016] Figure 2 This is a schematic diagram of the exploded structure of the headlight;

[0017] Figure 3 is a schematic diagram of the structure of the headlight from a first angle;

[0018] Figure 4 is a schematic diagram of the structure of the headlight at a second angle;

[0019] Figure 5 It is a schematic diagram of the assembly structure of the heat sink and the driver board;

[0020] Figure 6 It is a schematic diagram of the structure in which the second low beam lens is placed on the driving plate;

[0021] Figure 7 is a schematic diagram of the layout structure of the headlight;

[0022] Figure 8 It is a schematic diagram of the focusing effect of the headlight;

[0023] Fig. 9 It is a schematic diagram of the structure of installing the first fixing frame on the heat sink;

[0024] Fig.10 It is a schematic diagram of the structure of installing the second fixing frame on the heat sink;

[0025] Fig.11 It is a schematic diagram of the structure of installing the third fixing frame on the heat sink.

[0026] Explanation of the accompanying drawings: 100, shell; 110, positioning part; 111, light channel; 120, rear shell; 130, decorative shell; 140, light partition wall; 150, mounting part; 160, annular part; 170, first vent; 200, heat sink; 210, waterproof breathable membrane; 220, first fixing position; 230, second fixing position; 300, drive board; 310, low beam light source; 311, first low beam lens; 312, second low beam lens; 313, positioning column; 314, positioning hole; 320, high beam light source; 321, high beam lens; 330, position light; 331, light homogenizing member; 332, circuit board; 400, lampshade; 410, light emitting cavity; 420, second vent; 500, sealing ring; 610, first bracket; 620, second bracket; 630, third bracket. DETAILED DESCRIPTION

[0027] The following will further describe the specific implementation of the utility model in combination with the accompanying drawings of the embodiments, so that the technical solution of the utility model is easier to understand and grasp. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0028] This embodiment provides a headlight that can be used for lighting bicycles, scooters, and electric vehicles. Figure 1-11 As shown, the headlight includes a housing 100, a heat sink 200 is disposed on the housing 100, a driving plate 300 is disposed on the driving plate 300, a low beam light source 310 is disposed on the driving plate 300, a first low beam lens 311 is disposed in front of the low beam light source 310, and a second low beam lens 312 is disposed between the low beam light source 310 and the first low beam lens 311. When the driving plate 300 is powered on, the low beam light source 310 can emit light, and the heat generated by the driving plate 300 and the low beam light source 310 can be dissipated through the heat sink 200 to prevent the driving plate 300 from being overheated. Figure 8As shown, the light emitted by the low beam light source 310 is initially focused by the second low beam lens 312 so that more light can pass through the first low beam lens 311 . The light is further focused by the first low beam lens 311 so that the light tends to be emitted from the first low beam lens 311 in parallel.

[0029] like Figure 1 , 8 As shown, the light emitting surface of the second low beam lens 312 is smaller than the light emitting surface of the first low beam lens 311, and the distance between the light incident surface of the first low beam lens 311 and the light emitting surface of the second low beam lens 312 is greater than the distance between the light incident surface of the second low beam lens 312 and the low beam light source 310. Since the second low beam lens 312 is closer to the low beam light source 310, the diffusion range of the light reaching the second low beam light source 310 is smaller, and the smaller second low beam lens 312 can allow most of the light to pass through it for focusing, thereby reducing costs and helping to reduce the overall volume of the headlight.

[0030] like Figure 5 , 6 As shown, the second low beam lens 312 has a positioning column 313, the driving plate 300 is provided with a positioning hole 314, the positioning column 313 is embedded in the positioning hole 314, and the housing 100 has a positioning portion 110, and the positioning portion 110 abuts against the second low beam lens 312 to press the second low beam lens 312 onto the driving plate 300. The positioning column 313 and the positioning hole 314 realize the preliminary positioning of the second low beam lens 312, which is convenient for further pressing the second low beam lens 312 through the positioning portion 110 to improve the assembly efficiency. The positioning portion 110 surrounds the light channel 111, and the size of the light channel 111 gradually increases from the second low beam lens 312 to the first low beam lens 311, which is convenient for the light emitted from the second low beam lens 312 to properly diffuse and improve the lighting range.

[0031] like Figure 1-4 As shown, the housing 100 includes a rear shell 120 and a decorative shell 130. After the rear shell 120 and the decorative shell 130 are fixed, the first low beam lens 311 is supported and fixed. The decorative shell 130 has a low beam hole, and the first low beam lens 311 passes through the low beam hole.

[0032] like Figure 1 , 5-7, the driving plate 300 is provided with a high beam light source 320 on both sides of the low beam light source 310, and the shell 100 is provided with a high beam lens 321 corresponding to the high beam light source 320, and the two high beam light sources 320 are distributed on both sides of the low beam light source 310 to facilitate the centered illumination of the low beam and the high beam, and the shell 100 is provided with a light isolation wall 140 to isolate the channel from the low beam light source 310 to the first low beam lens 311 and the channel from the high beam light source 320 to the high beam lens 321 from each other, so as to avoid the interference of the high beam lens 321 on the low beam illumination and the interference of the first low beam lens 311 on the high beam illumination.

[0033] like Figure 1 , 2 As shown in Figures 7 and 8, a position lamp 330 is provided between the rear shell 120 and the decorative shell 130, a light homogenizer 331 is provided in front of the position lamp 330 on the shell 100, a lampshade 400 is provided on the shell 100 to cover the light homogenizer 331 and the first low beam lens 311, the lampshade 400 is a transparent cover, a light emitting cavity 410 is provided on the lampshade 400, the light homogenizer 331 is embedded in the light emitting cavity 410, and the light emitting cavity 410 has an outer light emitting surface and an inner light emitting surface. The circuit board 332 where the position lamp 330 is located is annular, and the light of the position lamp 330 is scattered by shining on the light homogenizer 331 and emitted from the lampshade 400 from different directions, so that the vehicle using the headlight of the utility model can be observed from the side, improving driving safety.

[0034] like Figure 2 , 4 As shown in , 7, the housing 100 includes a mounting portion 150 and an annular portion 160, both ends of the mounting portion 150 are integrally connected to the annular portion 160, the heat sink 200 is fixed corresponding to the mounting portion 150, a first vent 170 is provided between the mounting portion 150 and the annular portion 160, and the lampshade 400 has a second vent 420 corresponding to the first vent 170. During the driving of the vehicle, the airflow can pass through the first vent 170 and the second vent 420, thereby improving the fluidity of the airflow around the heat sink 200 and improving the heat dissipation effect.

[0035] like Figure 1 , 2 As shown, a sealing ring 500 is provided between the heat sink 200 and the housing 100, and the heat sink 200 has a mounting cavity, and the driving board 300 is fixed in the mounting cavity. Figure 4 As shown, the rear end of the heat sink 200 is provided with an air hole connected to the installation cavity, and the air hole is provided with a waterproof air-permeable membrane 210. The sealing ring 500 and the waterproof air-permeable membrane 210 can prevent moisture from entering the installation cavity and prevent the drive board 300 from being damaged. The waterproof air-permeable membrane 210 facilitates the heat dissipation of the drive board 300.

[0036] like Figure 9-11 As shown, the first fixing positions 220 are provided on both sides of the heat sink 200, and the second fixing position 230 is provided in the middle of the heat sink 200. Fig.10 As shown, the first fixing position 220 is two threaded holes, which fix two independent first brackets 610, and the two first brackets 610 are respectively fixed on the two forks of the bicycle front fork. Fig.11 As shown, a semi-frame-shaped second bracket 620 is fixed on the first fixing position 220, and the second bracket 620 can be fixed on the front fork of the bicycle with the middle tube. Fig. 9 As shown, the second fixing position 230 is a convex fixing part, and the fixing part has threaded holes on both sides, on which the third bracket 630 is fixed, and the third bracket 630 can be fixed on the front fork blade of the bicycle. The fixing position is located on the heat sink 200, and the heat on the heat sink 200 can be quickly transferred to the bicycle by heat conduction through the bracket, thereby improving the heat dissipation efficiency.

Claims

1. A headlight, characterized in that: The invention comprises a shell (100), a heat sink (200) being provided on the shell (100), a driving plate (300) being provided on the heat sink (200), a low-beam light source (310) being provided on the driving plate (300), a first low-beam lens (311) being provided in front of the low-beam light source (310), and a second low-beam lens (312) being provided between the low-beam light source (310) and the first low-beam lens (311).

2. The headlight according to claim 1, characterized in that: The light emitting surface of the second low beam lens (312) is smaller than the light emitting surface of the first low beam lens (311), and the distance between the light incident surface of the first low beam lens (311) and the light emitting surface of the second low beam lens (312) is greater than the distance between the light incident surface of the second low beam lens (312) and the low beam light source (310).

3. The headlight according to claim 1, characterized in that: The second low-beam lens (312) has a positioning column (313), the driving plate (300) is provided with a positioning hole (314), the positioning column (313) is embedded in the positioning hole (314), the housing (100) has a positioning portion (110), and the positioning portion (110) abuts against the second low-beam lens (312) to press the second low-beam lens (312) onto the driving plate (300).

4. The headlight according to claim 1, characterized in that: The housing (100) comprises a rear housing (120) and a decorative housing (130); the rear housing (120) and the decorative housing (130) are fixed to support and fix the first low-beam lens (311); the decorative housing (130) has a low-beam hole, and the first low-beam lens (311) passes through the low-beam hole.

5. The headlight according to claim 1, characterized in that: The driving plate (300) is provided with high-beam light sources (320) on both sides of the low-beam light source (310); a high-beam lens (321) corresponding to the high-beam light source (320) is provided on the housing (100); and a light-isolating wall (140) is provided on the housing (100) so that a channel from the low-beam light source (310) to the first low-beam lens (311) and a channel from the high-beam light source (320) to the high-beam lens (321) are isolated from each other.

6. The headlight according to claim 4, characterized in that: A position light (330) is provided between the rear shell (120) and the decorative shell (130); a light homogenizer (331) is provided on the shell (100) in front of the position light (330); a lampshade (400) is provided on the shell (100) to cover the light homogenizer (331) and the first low-beam lens (311); the lampshade (400) is a transparent cover; a light-emitting cavity (410) is provided on the lampshade (400); the light homogenizer (331) is embedded in the light-emitting cavity (410); and the light-emitting cavity (410) has an outer light-emitting surface and an inner light-emitting surface.

7. The headlight according to claim 6, characterized in that The shell (100) comprises a mounting portion (150) and an annular portion (160), the two ends of the mounting portion (150) are integrally connected to the annular portion (160), the heat sink (200) is fixed corresponding to the mounting portion (150), a first vent (170) is provided between the mounting portion (150) and the annular portion (160), and the lampshade (400) has a second vent (420) corresponding to the first vent (170).

8. The headlight according to claim 1, characterized in that: A sealing ring (500) is provided between the heat sink (200) and the housing (100); the heat sink (200) has a mounting cavity; the drive plate (300) is fixed in the mounting cavity; a vent hole communicating with the mounting cavity is provided at the rear end of the heat sink (200); and a waterproof breathable membrane (210) is provided on the vent hole.

9. The headlight according to any one of claims 1 to 8, characterized in that: A first fixing position (220) is provided on both sides of the heat dissipation seat (200) and / or a second fixing position (230) is provided in the middle of the heat dissipation seat (200).

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